Update dependency shfmt to v3.8.0

[renovate]

This PR contains the following updates:

Package	Update	Change
shfmt	minor	3.7.0 -> 3.8.0

---

Release Notes

mvdan/sh (shfmt)

v3.8.0

Compare Source

This release drops support for Go 1.19 and 1.20 and includes many
features and bugfixes, such as improving EditorConfig support in shfmt.

• cmd/shfmt
  • Support EditorConfig language sections such as [[shell]] - #​664
  • Add --apply-ignore for tools and editors - #​1037
• syntax
  • Allow formatting redirects before all command argumetnts - #​942
  • Support brace expansions with uppercase letters - #​1042
  • Unescape backquotes in single quotes within backquotes - #​1041
  • Better error when using function in POSIX mode - #​993
  • Better column numbers for escapes inside backquotes - #​1028
• interp
  • Support parentheses in classic test commands - #​1036
  • Determine access to a directory via unix.Access - #​1033
  • Support subshells with FuncEnviron as Env - #​1043
  • Add support for fs.DirEntry via ReadDirHandler2
• expand
  • Add support for fs.DirEntry via ReadDir2
  • Support zero-padding in brace expansions - #​1042

---

Configuration

📅 Schedule: Branch creation - "before 4am" (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate. View repository job log here.